In general, significant facility projects are funded by the town through a debt exclusion. In this process, voters give the town permission to borrow money outside the limitations of Massachusetts Proposition 2½, and taxes are increased to pay back the loan during the term of repayment (usually 30 years).
The town would ask voters for this approval in two separate forums, first at Town Meeting and then by holding a ballot box vote. Both votes would need to pass in order to approve the debt exclusion.
 A debt exclusion is not the same as an override. Generally, with a debt exclusion, voters allow an increase in taxes only to pay back specific project debt over the duration of a loan. An override allows an increase in taxes that will be ongoing and used for operating costs. Historically, Andover has passed debt exclusions for facility projects. Andover has never passed an override.